By Patrick Appel
Tyler Cowen advises:

Think of a blog as competing with both Google and Wikipedia, among other aggregators.  If you knew you wanted to read about "the minimum wage," you could bypass Tyler and Alex and Google to the best entries (some of which might include us, of course).  But with Google and Wikipedia you must choose the topic.  A good blog writer can randomize the topic for you, much like a good DJ controls the sequence of the music.

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